[net-next PATCH V3 1/2] octeontx2-af: Code restructure to handle TC outer VLAN offload

From: Suman Ghosh
Date: Tue Aug 01 2023 - 01:39:21 EST


Moved the TC outer VLAN offload support to a separate function.
This change is done to handle all VLAN related changes cleanly from
a dedicated function.

Signed-off-by: Suman Ghosh <sumang@xxxxxxxxxxx>
---
.../ethernet/marvell/octeontx2/nic/otx2_tc.c | 93 +++++++++++--------
1 file changed, 53 insertions(+), 40 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index 0915a0121316..f311fa6db7ce 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -439,6 +439,55 @@ static int otx2_tc_parse_actions(struct otx2_nic *nic,
return 0;
}

+static int otx2_tc_process_vlan(struct otx2_nic *nic, struct flow_msg *flow_spec,
+ struct flow_msg *flow_mask, struct flow_rule *rule,
+ struct npc_install_flow_req *req, bool is_inner)
+{
+ struct flow_match_vlan match;
+ u16 vlan_tci, vlan_tci_mask;
+
+ if (is_inner)
+ return -EOPNOTSUPP;
+
+ flow_rule_match_vlan(rule, &match);
+ if (ntohs(match.key->vlan_tpid) != ETH_P_8021Q) {
+ netdev_err(nic->netdev, "vlan tpid 0x%x not supported\n",
+ ntohs(match.key->vlan_tpid));
+ return -EOPNOTSUPP;
+ }
+
+ if (!match.mask->vlan_id) {
+ struct flow_action_entry *act;
+ int i;
+
+ flow_action_for_each(i, act, &rule->action) {
+ if (act->id == FLOW_ACTION_DROP) {
+ netdev_err(nic->netdev,
+ "vlan tpid 0x%x with vlan_id %d is not supported for DROP rule.\n",
+ ntohs(match.key->vlan_tpid), match.key->vlan_id);
+ return -EOPNOTSUPP;
+ }
+ }
+ }
+
+ if (match.mask->vlan_id ||
+ match.mask->vlan_dei ||
+ match.mask->vlan_priority) {
+ vlan_tci = match.key->vlan_id |
+ match.key->vlan_dei << 12 |
+ match.key->vlan_priority << 13;
+
+ vlan_tci_mask = match.mask->vlan_id |
+ match.mask->vlan_dei << 12 |
+ match.mask->vlan_priority << 13;
+ flow_spec->vlan_tci = htons(vlan_tci);
+ flow_mask->vlan_tci = htons(vlan_tci_mask);
+ req->features |= BIT_ULL(NPC_OUTER_VID);
+ }
+
+ return 0;
+}
+
static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
struct flow_cls_offload *f,
struct npc_install_flow_req *req)
@@ -564,47 +613,11 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
}

if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
- struct flow_match_vlan match;
- u16 vlan_tci, vlan_tci_mask;
-
- flow_rule_match_vlan(rule, &match);
-
- if (ntohs(match.key->vlan_tpid) != ETH_P_8021Q) {
- netdev_err(nic->netdev, "vlan tpid 0x%x not supported\n",
- ntohs(match.key->vlan_tpid));
- return -EOPNOTSUPP;
- }
-
- if (!match.mask->vlan_id) {
- struct flow_action_entry *act;
- int i;
-
- flow_action_for_each(i, act, &rule->action) {
- if (act->id == FLOW_ACTION_DROP) {
- netdev_err(nic->netdev,
- "vlan tpid 0x%x with vlan_id %d is not supported for DROP rule.\n",
- ntohs(match.key->vlan_tpid),
- match.key->vlan_id);
- return -EOPNOTSUPP;
- }
- }
- }
+ int ret;

- if (match.mask->vlan_id ||
- match.mask->vlan_dei ||
- match.mask->vlan_priority) {
- vlan_tci = match.key->vlan_id |
- match.key->vlan_dei << 12 |
- match.key->vlan_priority << 13;
-
- vlan_tci_mask = match.mask->vlan_id |
- match.mask->vlan_dei << 12 |
- match.mask->vlan_priority << 13;
-
- flow_spec->vlan_tci = htons(vlan_tci);
- flow_mask->vlan_tci = htons(vlan_tci_mask);
- req->features |= BIT_ULL(NPC_OUTER_VID);
- }
+ ret = otx2_tc_process_vlan(nic, flow_spec, flow_mask, rule, req, false);
+ if (ret)
+ return ret;
}

if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS)) {
--
2.25.1